HD Starter Clutch '07-Up Big Twin 79-2104ALL BALLS starter motors are manufactured with all new components that have been fine tuned for starting the H D V twin engine. Our clutches utilize 20% oversize rollers, and the idler gears are manufactured from cold headed steel. End frames are cold chamber die cast and machined on precision fixtures. Armature hairpins are resistance fused to the commutator. All starters are supplied with a 10 32 threaded output shaft, and a conversion bolt for the